package com.atm.web.filter;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

public class LoginFilter implements Filter{
	
	@Override
	public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
			throws IOException, ServletException {
		HttpServletRequest req = (HttpServletRequest) request;
		HttpServletResponse resp = (HttpServletResponse) response;
		HttpSession session = req.getSession();
		if(session.getAttribute("account")==null){
			resp.sendRedirect(req.getContextPath()+"/index.jsp");
			return;
		}
		chain.doFilter(request, response);
	}

	@Override
	public void destroy() {
		
	}


	@Override
	public void init(FilterConfig arg0) throws ServletException {
		
	}

}
